Stroke indicator



Patented Oct. 13, 1925.

UNITED STATES PATENT OFFICE.

ROBERT T. -HAZIEL'I'ON, OF CINCINNATI, Q'HIO,l ASSIGNOR T0 THE CINCINNATI SHAPED. vCOMPANY, OF CINCINNTI, OHIO, A. CORPORATION OF OHIO.

s'raoxE INnIcAToR.-

Application :ledl uly 25, 1924. Serial No. 728,275.

' To all whom t may concern.'

Be it known that I, ROBERT T. HAzEL'roN, a citizen of the United States, and residing :at Cincinnati,. in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Stroke Indicators, i

of which the following specification is a full disclosure. l

This invention relates. generally to improvements in metal working-machines and is shown herein as applied to a Shaper of the oscillating link type, and the invention articularly relates to indicator mechanism or indicating the length of stroke to which the shaperram is adjusted and providing a dial reading for making aram stroke` length setting or adjustment.

An object of the invention is to provide simple and positively operable means for indicating the stroke length of the' ram of a shaper and whereby the changes in stroke length are made v1sually evident to the operator.

A further object is the provision of a stroke adjusting mechanism and a stroke indicating device' .operative through ram stroke adjusting means or mechanism of the machine. l

Another object is` to mount the dial at such an angle as will ermit the most conlvenient observation an reading by the operator at a position in making an adjustment of the ramthus the dial member of the device is placed at an angle to both horizontal and vertical planes, for this purose.

p Important features f of the inveiition include a sleeve translatable -b the stroke adjusting shaft of the stro e adjusting mechanism', thesleeve having circumferential rack teeth directly engaged with va spur or spiral gear at one end of a dial shaft -upon the other end of which is mounted a graduated 'diskfthe graduations of which are registerable with a lmark upon the machine frame.A ,V Y y l 'Other objects and features and certain advantages will be pointed out` inthe de-` scription of the drawing forming a part of this specification, in which drawing:

Fi re 1 is a vertical transverse /section showlng .the application of my device to a shaper. 'l

\ Figure' 2; is an endelevation -partly in section showing the relation of the dial-disk to the casing, and of the dial shaft ear to they sleeve translatable upon and y. the spindle. l

Figure 3 isa sectionalv elevation` of the sleeve. Figure 4 is a face View of the dial. Figure 5 is a sectional elevation of the dial and dial shaft assembled.

Referring to the drawings, vthe numeral 1 indicates the` frame of the machine which is mounted on a suitable base, .the upper side of the frame being provided with'the usual dove-tail guideway within'which the ram 3 reciprocates. 'lhe forwardv end' of the ram is equipped with the ordinary tool holder, not shown herein. The ram is reciprocable by a pitman or-l oscillating link '4 which atits lower end is provided witha hub through whichk a suitable pivot rody 5 is engaged, the rod having its opposite ends supported in bearings formed in opposite side walls of the main frame. The upper end ofthe pitman is suitably connected with the ram by a link 6, the connection of the link with the ram not herein being shown.l Moreover, the link may be 'connected to any other form of reciprocatory member correspending to the ram shown herein and the connection may lbe made in any suitable manner.

The pitman is in the form of a casting and provides a longitudinally recessed portion .open at one side, providing opposing aral- `main frameby screws. The inner face of the crank gear is provided with a radial guideway 15 formed by a pair of spacedl ribs projecting from the side of said gear,

the ribs terminating in a webvl or lug 16 forming abearing for supporting and'journaling one end of a diametrically disposed screw shaft 18 which is disposed centrallyv` between the ribs. The screw shaft 18 is rotatable in its bearing, and is held from longitudinal4 motion.,A by collars 19 pinned to the screw shaft at the outer end and abut- Cil ting one side of the lug 16-'and by a bevel gear 20 pinned to the screwshaft at 'the opposite side of the lug.

The screw rod has threaded engagement as at 21 with the crankpin 11, which pin has a nut or head portion 25 as a slide block 'engaged within the guideway 15 of the crank gear. As before indicated the crank pin journals within the block and is slidable in the pitman guideway. When the screw 18 is rotated the crank pin and slide-block 'are brought in directions toward or away from the gear axis, thus obtaining shorter ,or longer throw of the pitman.

For adjusting the throw of the crank pin the screw 18 is revolved by means of the bevel pinion 20 meshing with a pinion 27. journaled on a stub shaft carried by the gear 12 adjacent its center, and this pinion has, in addition to bevelteeth, spur teeth meshing with corresponding spur teeth on the end of a s indle 32 which is concentrically journale within the hub 13 and extends outwardly as shown.

The forward end of the spindle is journaled in ahub cap 35 secured `to the outer end of the hub 13 of the crank gear. The

against the seat in the hub cap -under pres-` hub cap 35 has an elongated hub extension upon which a crank member 36 is engaged and rigidly vxed to the hub cap and hub end of the crank ear by screws or other fastening means w ereby' the hub cap and crank member 36 are unitarily combined with the crank gear and rotative therewith.

'sotion to avoid disturbing a crank throw setting, which is effected by independently rotating the spindle. The spindle` is -held -sure by aspring`40 about the spindle vbetween an inner wall ofthe crank gear hub and an `annular flange onthe spindle. To release the'spindle from its binding engagement with the hub cap the' spindle'is-depressed inwardly, a slight longitudinal motion only being required which is applied by the operator. f

The outer end of the spindle beyondthe conical bearing portion is threaded as at 41 and uared at its extremity to provide a wrenc socketcrank receiving head 42 for rotating the spindle to make a crank throw adjustment. The crank throw y.adjustment mechanism above described while illustrative of a preferred form of constructionl may be re resentative of any conventional form in t e presentcommercial Shapers characteristic to the employment of a rotary spindle extending from' the axis of the crank gear for making a crank throw adjustment and to which my improved indicator mechanism is applicable. v

The indicator mechanism comprises a sleeve or tubular rack element Ll5having its bore 46 screw-threaded and engaged with the corresponding threaded portion 41 of the spindle, and the sleeve exteriorly is circumdetail, providingrack teeth 47. The sleeve is splined as Iat 49 within the bore into the end of theh'ub 13 ofthe cap 35, and therefore rotative with the crank gear, and translatable longitudinally upon 'the spindle when the spindle is independentl rotated -for a crank 'throw adjustment. he teeth of the rack sleeve are engaged with the spiral gear 50 formed at the lower end of the shaft 51 which is journaled in a bearing in the frame, or in a cap plate removably attached to the frame 14. At the up er end of this shaft'is fixed a disk 52 in the orm of a dial upon the periphery of which are graduations 53 registerable' with the indicator mark 54 'upon indicator 'face of the casing 55. The upper end of the shaft is turned to provide a conical surface withy which isengaged the vcorresponding conical opening of the disk, a. clamping screw being erentially grooved, as shown in Fig. 3 in provided to force the parts into frictional 1nding engagement, see Fig. 5. The shaft 51 anddial 52 are disposed at an angle so that the graduations are fully visible from the operators position in making a crank throw adjustment. In an adjustment of the crank or crank pin 11 by the rotation of thespindle 32 the sleeve is fed inwardly or outwardly, according to the direction ofspindle rotation as may be required, and this 'translative movement imparts rotative motion to the rack gear 50, shaft 51 and dial 52 in a corresponding degree relative to the longitudinal movement of the rack sleeve upon the s indle.

This indlcator mechanism is very simple in constructiomand eiiicie'nt with a very limited number of parts'iand under an arrangement in which there vis no perceptible `amount of lostm'otionffHV mg' invention, I'- claimz t e class described, a

`Having described 1.`In adevice of crank gearhaving a crank pin adjustably mounted thereon a stroke-adjusting mechanism including a rotatable spindle journaled within said crank gear, a sleeve independently translatably non-rotatably mounted with- 1n said crank gear, having threaded connection with said spindle and having racky teeth' thereon, and a rotatably mounted dial-shaft having a gear at one end in mesh with said rack teeth and having a graduated disk rotatable therewith for visually indicating the degrees of stroke adjustment when said spindle is independently rotated.

2. ln a device of the class described a crank gear, having a crank pin adjus'tably mounted thereon, a stroke-adjusting mechanism including a rotatable stroke-adjusting shaft journaled within said crank gear, a

sleeve independently translatably non-rotat ably mounted within Said crank gear and having threaded connection with said shaft,-

said sleeve having circumferential rack teeth, and a rotatable dial-shafthaving a gear at one end in mesh with said rack teeth and having a graduated disk at the other end for indicating the degree ot stroke adjust-ment when said adjusting shaft is rotated for a stroke adjusting operation.

.ln a device ot the class described, a

' support, a driving member rotatable therein having an adjustable crank therein, means :tor radially adjusting said crank including a spindle rotatably supported in said driving member, a sleeve translatably nonre-y tatably mounted upon said driving member having circumferential rack teeth, and a dial-shaft having a gear thereon in mesh with said rack teeth and having a graduated diskftor visually indicating the degree of crank pin adjustment independently rotated.

ln a device of the class described, a driving member rotatably mounted, a crank pin adjustable thereon, means for adjusting said crank pin including a rotatable member, adapted for non-rotation tive tov said driving member, respectively, to adjust said crank pin and to maintain the adjustment, a sleeve "in threaded engagement with said shaft havingcircumferential spur teeth and'splined to said driving member, and a dial-shaft having afgear in mesh with said spur teeth adapted to be rotated by said'sleeve when the same is translated by an adjusting rotation of the spindle,

said dial-shaft having a dial member having visual graduations thereon for indicating the degree of pin adjustment.

5. In a device of the character described, a rotatably mounted crank gear having a hub, a crank adjustable upon said gear, a spindle concentrically journaled within the gear hub in transmission connection with said crank for adjusting the same when rotated, a sleeve in threaded engagement with thespindle having circumferential rack teeth and splined to .said hub, and a dial-shaft independently journaled having rotated.

when said spindle is and rotation rela- :a gear in. mesh with the circumferential teeth of said sleeve and having a dial rotatable therewith for indicating the degree ot' crank pin adjustment when said spindle is independently rotated.

ln a device of the class described, a frame, a gear having a hub extension rotatable therein, a crank adjustable upon said gear, a terminally-threaded spindle concentrically j ournaled within said hub and transmittably connected with said crank tor adjusting the same, sleeve engaged with the spindle threads and splined to the hub, and a dial-shaft independently rotatably mounted in said frame having a gear in mesh with a tooth oit said spindle and having agraduated dial rotatable therewith and visible from the outer side of the frame for indicating the degree of crank adjustmentwhen said spindle 'iis 7. ln a machine tool of thecharacter'da scribed,.a trame, a crank gear within said trame, having a tubular hub journaled in said frame, a radially adjustable crank upon the side ot the gear, a spindle journaled within the hub transmittably connected with the crank for adjusting the same, a sleeve in threaded engagement with the spindle having circumferential gear teeth and splined a circumferential toothedJ to said hub, and a dial-shaft independently,

rotatably mounted having a spur gear thereon in mesh with the teethvotsaid sleeve and having a graduated dialrotatable therewith and adapted for visually indicating the degree of crank pin adjustment upon the gear when said spindle is rotated upon adjusting operation. i 8. ln a device oit the class described, a j frame, a crank `gear having a hub extension rotatable therein, a crank radially adjustable upon said gear, a spindle concentrically journaled within the hub transmittably connected with said crank for aadjusting the same, a sleeve rotatable with and translatable relative to said hub in threaded connection with said spindle having circumferentiall `spur fed'longitudinally of the spindle. when the spindle is rotated for crank adjustment, and ,a dial-shaft rotatable in the frame having a gear in mesh with the spur teeth of the sleeve and having a dial rotatable therewith at the outside of the frame having gradualtions registerable with a mark on the frame for indicatingthe degree of movement of the crank pin during adjusting rotation of the spindle.

ln witness whereof, Ihei'eunto subscribe my name.

teeth, said sleeve adapted to be 

